Method of making hollow glass microspheres


HOLLOW GLASS MICROSPHERES POWDERs have widespread applications in many technologies, including buoyancy modules, density modifiers for drilling fluids, cement, explosives, thermosets (including adhesives and coatings), molded polymeric products (e.g., rubber and thermoplastic parts), and thermal insulation including cryogenic or heat applications, for example, in pipes, tanks or buildings. Despite the multitude and size of the markets into which HOLLOW GLASS MICROSPHERES POWDERs have penetrated, there are many more application fields for which HOLLOW GLASS MICROSPHERES POWDERs could offer a technical solution. Unfortunately, these solutions are often not commercially viable due to associated manufacturing costs. Many technical challenges are encountered in manufacturing HOLLOW GLASS MICROSPHERES POWDERs. Commercial glass bubbles are generally formed using flame-forming technology. It is believed that the short residence times in the hot gas flames increase overall HOLLOW GLASS MICROSPHERES POWDER yields by avoiding overheating, resulting in burst bubbles due to the lower melt viscosity and simultaneously higher pressure from the blowing agent. Amorphous glass compositions used as a feed unavoidably comprise a distribution of particle sizes— the smaller particles will heat up faster than larger particles. Hence, a variety of ideal conditions exist to form a bubble. By employing very high temperatures in gas flame followed by a rapid quench when the particles leave the flame, all particles of the distribution are heated up fast enough to reach the forming temperature almost simultaneously. While the smaller ones still might reach a higher melt temperature, avoiding an excessively high number of burst bubbles becomes a question of kinetic control, as the flow processes during expansion take some time. If the quench now comes fast enough. If you are looking for high quality, high purity, and cost-effective Hollow glass powder, or if you require the latest price of Hollow glass powder, please feel free to email contact mis-asia.

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